READTWIN · Getting started
A good place to begin.
Answers about importing, translating, saving and restoring your reading space.
How do I start?
Choose your translation language, then import a DRM-free EPUB, MOBI, AZW3, PDF or TXT. Open the book and switch between original, bilingual and translated layouts. You can also try three classic samples.
Why is translation unavailable?
Check the site service status in Settings → AI connection, or enter your own endpoint, key and model and test the connection. Wait if a quota is exhausted. Original mode remains available.
Can I translate PDFs and scans?
Text-based PDFs are extracted page by page and reflowed for translated reading. Illustrations, tables and multi-column layouts are not fully preserved. Download the source PDF from More actions. Scanned PDFs need OCR first; this version includes neither OCR nor DRM removal.
Does my reading save automatically?
Books and progress are saved on this device. Translations are cached separately by target language and translation settings. Bookmarks, notes and words persist, but your browser may clear storage. Export backups regularly.
How do I change devices?
Export your library in Settings → Data & backup. Open ReadTwin on the other device and restore the file. API keys are not included and must be configured again. You can also expand WebDAV settings for manual sync.
Browser storage can be cleared by your browser. Export a backup regularly.